MF-NSML400-2 is a low-ohmic PTC resettable fuse designed for overcurrent protection in compact electronic applications. This surface mount device features a 1206 footprint with ultra-low resistance of 0.0015 Ohms at 23°C, a hold current of 3.80 A, and a trip current of 8.00 A, providing reliable protection at 6V maximum voltage. The device exhibits a maximum time to trip of 0.0140 seconds and tripped power dissipation of 5.00 W at 23°C, with temperature-dependent hold current characteristics ranging from 5.80 A at -40°C to 1.80 A at 85°C. The MF-NSML400-2 is RoHS compliant, halogen-free, and packaged in tape and reel format per EIA 481 standard, making it ideal for automated assembly in mobile devices, consumer electronics, and other space-constrained applications requiring fast-acting overcurrent protection.